try quoting

dchelimsky · dchelimsky · commit c1b8bca098ae · 2011-04-24T15:34:59.000-05:00
diff --git a/.travis.yml b/.travis.yml
@@ -4,8 +4,8 @@ rvm:
   - 1.9.1
   - 1.9.2
 gemfile:
-  - $PWD/gemfiles/rails-3.0.7
-  - $PWD/gemfiles/rails-3-0-stable
-  - $PWD/gemfiles/rails-master
+  - "$PWD/gemfiles/rails-3.0.7"
+  - "$PWD/gemfiles/rails-3-0-stable"
+  - "$PWD/gemfiles/rails-master"
 env:
   - USE_GIT_REPOS=true
